A sixth suspect was arrested Tuesday in an alleged kidnapping attempt at a Novato hotel, while two of her alleged conspirators were charged with a robbery in Terra Linda.

Ann Monique Ruggiero, 22, of Novato was arrested in a room at the America's Best Value Inn in Novato on charges she tried to kidnap a man there on Jan. 30. Ruggiero is also charged with assaulting the victim.

Five other suspects — Myia Simmons, Indugo Williams, James Ahrenholz, Randy Martin and Karen Greer — made their initial court appearances Tuesday. Commissioner Randolph Heubach appointed their lawyers and delayed the arraignments until Friday.

Also Tuesday, the district attorney's office filed robbery charges against Myia Simmons and Indugo Williams for an incident last month at the Northgate mall in Terra Linda, said prosecutor Teresa Leon Varela. Authorities suspect Simmons grabbed a woman's purse and fled to a getaway car that Williams was driving.

The alleged victim said she chased the robber to the parking lot and punched her repeatedly in the face until she gave the purse back.

Williams was also charged with possession of a stolen vehicle. The car that carried the suspects from the Northgate robbery was stolen in Petaluma and recovered later in Berkeley.

San Rafael police are still investigating the identities of two men seen in the back seat of the getaway car.

Novato police Chief James Berg declined to release additional details about the alleged kidnapping attempt while the investigation continues.

All six suspects remain in custody at the Marin County Jail.

Karen Greer, 48, is the only suspect not charged with attempted kidnapping and assaulting the hotel victim. She is charged with possession of OxyContin, hydrocodone and an iPod stolen from the victim. Her lawyer is Marta Galeano.

Indugo Williams, 35, is a paroled sex offender with convictions for unlawful sex with a minor, assault and drug crimes. His lawyer in the new cases, Jon Rankin, is the same attorney who got rape charges dismissed against him in 2010.

Myia Simmons, 23, the mother of three young children, was already facing charges in a separate theft case when she was arrested in the Novato kidnapping investigation. Her lawyer is Robin Brennan.

James Ahrenholz, 23, has prior convictions for theft, burglary and bringing a gun on a Golden Gate Transit bus. His lawyer is Juliana Weil.

Ann Ruggiero was on probation until March 2014 for a burglary and forgery case, according to court records. She has yet to be appointed a lawyer.